Merge pull request #45 from serlo/push-images-to-ghcr #39

	name: Docker
	on:
	push:
	branches:
	- main

	jobs:
	update-version:
	runs-on: ubuntu-latest
	outputs:
	tag: ${{ steps.version.outputs.tag }}
	steps:
	- uses: actions/checkout@v4
	with:
	fetch-depth: 2
	- id: version
	uses: salsify/action-detect-and-tag-new-version@v2
	with:
	tag-template: '{VERSION}'
	version-command: \|
	cat VERSION

	push:
	runs-on: ubuntu-latest
	needs: update-version
	if: ${{ needs.update-version.outputs.tag }}
	steps:
	- uses: actions/checkout@v4
	- name: Login to GitHub Container Registry
	uses: docker/login-action@v3
	with:
	registry: ghcr.io
	username: ${{ github.actor }}
	password: ${{ secrets.GITHUB_TOKEN }}
	- uses: docker/build-push-action@v6
	with:
	push: true
	file: ./Dockerfile
	tags: ghcr.io/${{ github.repository }}:latest,ghcr.io/${{ github.repository }}/serlo-mysql-database:${{ needs.update-version.outputs.tag }}
	- name: Test for mysql in the serlo-mysql-database image
	run:
	docker run --entrypoint='' --rm ghcr.io/${{ github.repository }}:latest mysql --version

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